Explore the treasures of the Palazzo Spada and see the Borromini Optical illusion on our private tour. Lesser known but worth visiting Spada Gallery is hosed in the beautiful renaissance palace projected in 17th century by famous Italian architect Francesco Boromini. It displays the precious collection of paintings with the artworks by Guido Reni, Titian, Guercino, Artemisia Gentileschi and other baroque artists. With an entertaining commentary of your professional guide, you will discover the richly decorated halls of the residence and its masterpieces, including the most fascinating attraction of the palace – the architectural perspective gallery. This optical illusion consists of a 9-meter-long corridor that seems much longer due to a visual perception trick.